You can't just add things to the outside of a train, as you have a certain "gaug... | Hacker News

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		carstenhag on Oct 4, 2019 \| parent \| context \| favorite \| on: China laying tracks for 1,000km/h maglev trains You can't just add things to the outside of a train, as you have a certain "gauge" (Not sure if that's the word for it) on a track/tunnel/etc.

adrianN on Oct 4, 2019 [–]

You can when you build new lines for your maglev trains.

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